General Information
Secondary Commodities: tungsten
Deposit Type(s): Skarn W
Location(s): 61.820280 N, -129.040280 W
NTS Mapsheet(s): 105H14
Location Comments: .5 Kilometres
Hand Samples Available at YGS: No
Capsule
Work History
Staked in Sep/77 as Tai cl (YA25762) by Welcome North ML, which conducted mapping and sampling in 1977 and 1978. Riocanex explored with rock geochem sampling and 2 drill holes (160.6 m) in 1979 under a brief option. In 1981, the property was optioned to Union Carbide EL.
Capsule Geology
The showings consist of scheelite in garnet-diopside-quartz skarn that has developed in migmatized Proterozoic limy phyllite and limestone along the complex and indistinct margin of the Mt Billings Batholith. The skarns tend to be sulphide-deficient although minor amounts of pyrrhotite, sphalerite, magnetite and chalcopyrite are locally present. Molybdenite occurs with scheelite, magnetite and chalcopyrite in quartz veins that cut the skarn.
The northernmost showing, called Tai West, consists of a 30 m thick skarn zone that outcrops for over 600 m and contains very low grade scheelite. The other three showings (collectively called Tai East) consist of very narrow skarn bands. The middle showing, which is the best, returned average chip sample assays of 0.04% WO3. The best drill intersection was 0.02% WO3 over 15 m.
References
DICK, L.A., 1980. A comparative study of the geology, mineralogy, and conditions of formation of contact metasomatic mineral deposits in the northeastern Canadian Cordillera. Unpublished Ph.D. Thesis, Queen's University, p. 8, 118, 123-126, 179-180.
GEOLOGICAL SURVEY OF CANADA, Paper 78-1A, p. 289-290.
MINERAL INDUSTRY REPORT 1978, p. 68.
RIOCANEX, Dec/79. Assessment Report #090516 by D.C. Durgin.
WELCOME NORTH MINES LTD, Jun/78. Assessment Report #090357 by J.S. Brock.
YUKON GEOLOGY AND EXPLORATION 1979-80, p. 187-188.
Staked in Sep/77 as Tai cl (YA25762) by Welcome North ML, which conducted mapping and sampling in 1977 and 1978. Riocanex explored with rock geochem sampling and 2 drill holes (160.6 m) in 1979 under a brief option. In 1981, the property was optioned to Union Carbide EL.
Capsule Geology
The showings consist of scheelite in garnet-diopside-quartz skarn that has developed in migmatized Proterozoic limy phyllite and limestone along the complex and indistinct margin of the Mt Billings Batholith. The skarns tend to be sulphide-deficient although minor amounts of pyrrhotite, sphalerite, magnetite and chalcopyrite are locally present. Molybdenite occurs with scheelite, magnetite and chalcopyrite in quartz veins that cut the skarn.
The northernmost showing, called Tai West, consists of a 30 m thick skarn zone that outcrops for over 600 m and contains very low grade scheelite. The other three showings (collectively called Tai East) consist of very narrow skarn bands. The middle showing, which is the best, returned average chip sample assays of 0.04% WO3. The best drill intersection was 0.02% WO3 over 15 m.
References
DICK, L.A., 1980. A comparative study of the geology, mineralogy, and conditions of formation of contact metasomatic mineral deposits in the northeastern Canadian Cordillera. Unpublished Ph.D. Thesis, Queen's University, p. 8, 118, 123-126, 179-180.
GEOLOGICAL SURVEY OF CANADA, Paper 78-1A, p. 289-290.
MINERAL INDUSTRY REPORT 1978, p. 68.
RIOCANEX, Dec/79. Assessment Report #090516 by D.C. Durgin.
WELCOME NORTH MINES LTD, Jun/78. Assessment Report #090357 by J.S. Brock.
YUKON GEOLOGY AND EXPLORATION 1979-80, p. 187-188.
Location Map
Last Updated: Sep 15, 2011
Work History
| Year | Work Type | Comment |
|---|---|---|
| 1979 | Drilling: Diamond | Number of holes drilled: 2 Amount of work done: 160.6 METRES |
| 1979 | Other | |
| 1977 | Geology: Bedrock Mapping | |
| 1977 | Other |
Regional Geology - Terrane
Group: Ancestral North America
Affinity: W Laurentia
Name: North America - basinal strata
Realm: Laurentia
Regional Geology - Bedrock
Supergroup: Windermere
Group/Suite: Hyland
Formation: Yusezyu
Member: upper, undifferentiated
Terrane: Laurentia
Period Max: Ediacaran
Age Max: 635 MA
Period Min: Cambrian
Age Min: 541 MA
Rock Major: sandstone, conglomerate, shale, siltstone, phyllite, limestone
Rock Minor:
Reference: Moynihan (2018) - in preparation
Geological Unit (1M): PCH
Geological Unit (250K): PCH6
Assessment Reports that overlap occurrence
| Report Number | Year | Title | Worktypes | Holes Drilled | Meters Drilled |
|---|---|---|---|---|---|
| 096369 | 2008 | Geological Assessment Report on the Joey Claim Group (JOEY 1-78) | Silt - Geochemistry, Soil - Geochemistry, Prospecting - Other | ||
| 090516 | 1979 | Woah Option Geology & Drilling, 1979 | Diamond - Drilling, Rock - Geochemistry, Detailed Bedrock Mapping - Geology, Prospecting - Other | 6 | 351.10 |
| 090357 | 1977 | Geological Report on the Woah 1-56 and Tai 1-20 Claim Groups | Rock - Geochemistry, Detailed Bedrock Mapping - Geology, Regional Bedrock Mapping - Geology, Prospecting - Other | ||
| 018913 | 1968 | Geological Report on Thor (East) Mineral Claim Group, Tusles Lake Area, Watson Lake Mining Division, Yukon Territory | Detailed Bedrock Mapping - Geology | ||
| 019136 | 1968 | 1968 Progress Report and Proposed Program 1969 | Silt - Geochemistry, Soil - Geochemistry, Bedrock Mapping - Geology | ||
| 019913 | 1968 | Application for Northern Mineral Exploration Assistance on the Logan Project | Research/Summarize - Pre-existing Data | ||
| 019915 | 1967 | Property Report on Lee, Thor, Zeus, Pal, Star and Spar Mineral Claim Groups, Yukon Territory, Canada | Regional Bedrock Mapping - Geology, Property Evaluation - Other |
